Bump axum from 0.7.9 to 0.8.1 in /server

Bumps [axum](https://github.com/tokio-rs/axum) from 0.7.9 to 0.8.1.
- [Release notes](https://github.com/tokio-rs/axum/releases)
- [Changelog](https://github.com/tokio-rs/axum/blob/main/CHANGELOG.md)
- [Commits](https://github.com/tokio-rs/axum/commits)

---
updated-dependencies:
- dependency-name: axum
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

server/Cargo.lock

@@ -9,7 +9,7 @@ aws-sdk-dynamodb = "1.1.0"
 aws-smithy-types = "1.0.1"
 aws-smithy-runtime-api = "1.0.0"
 aws-smithy-http = "0.60"
-axum = "0.7.5"
+axum = "0.8.1"
 http = "1.0"
 http-body-util = "0.1.1"
 hyper = { version = "1.0.1", features = ["server", "http1", "http2"] }